Simplify defeat backend (#6965)

Co-authored-by: lL1l1 <82986251+lL1l1@users.noreply.github.com>

Author: Hdt80bro

changelog/snippets/fix.6965.md

@@ -0,0 +1 @@
+- (#6965) Refactored defeat backend so now unit transfering is handled the same in all scenarios.

changelog/snippets/fix.6985.md

@@ -0,0 +1 @@
+- (#6985) Fix profiler benchmarking potentially sending unserializable data from Sim to UI.

engine/Sim.lua

@@ -620,7 +620,7 @@ end
 
 --- Gets the current game time in ticks.
 --- The game time is the simulation time, that stops when the game is paused.
----@return number
+---@return integer
 function GetGameTick()
 end
 

lua/SimSync.lua

@@ -167,7 +167,7 @@ function FloatingEntityText(entityId, text)
 end
 
 function StartCountdown(entityId, duration)
-    cdDuration = duration or 5
+    local cdDuration = duration or 5
     if not entityId then
         WARN('Trying to start countdown text with no entityId.')
         return false